Caffeine is a central nervous system stimulant. That's why you feel pretty good within an hour after drinking it. Over time though, the body begins to expect the caffeine and consequently depresses its own nervous system to compensate. At that point you will need the caffeine just to feel normal, and the heightened sense of energy is no longer there-unless of course you continue to raise the level...
3/2/2009 8:55:55 PM
Many people tend to almost brag about how little rest need to function, but the truth is we don't seem to adapt to getting less sleep than we need. While we personally may "get used to" a sleep-depriving schedule, our judgment, reaction time, and other functions are still impaired-regardless of our awareness of it happening. Achieving what researchers call "deep sleep" is most important, which requires...
1/18/2009 5:10:29 PM